Use easier method to determine allocation space when serializing.

src/serialize.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_SERIALIZE_H_
 #define V8_SERIALIZE_H_
 
 #include "src/hashmap.h"
 #include "src/heap-profiler.h"
 #include "src/isolate.h"
@@ skipping 714 matching lines @@
   inline void FlushSkip(int skip) {
     if (skip != 0) {
       sink_->Put(kSkip, "SkipFromSerializeObject");
       sink_->PutInt(skip, "SkipDistanceFromSerializeObject");
     }
   }
 
   bool BackReferenceIsAlreadyAllocated(BackReference back_reference);
 
   // This will return the space for an object.
-  static AllocationSpace SpaceOfObject(HeapObject* object);
   BackReference AllocateLargeObject(int size);
   BackReference Allocate(AllocationSpace space, int size);
   int EncodeExternalReference(Address addr) {
     return external_reference_encoder_->Encode(addr);
   }
 
   // GetInt reads 4 bytes at once, requiring padding at the end.
   void Pad();
 
   // Some roots should not be serialized, because their actual value depends on
@@ skipping 270 matching lines @@
       kNumInternalizedStringsOffset + kInt32Size;
   static const int kNumCodeStubKeysOffset = kNumReservationsOffset + kInt32Size;
   static const int kPayloadLengthOffset = kNumCodeStubKeysOffset + kInt32Size;
   static const int kChecksum1Offset = kPayloadLengthOffset + kInt32Size;
   static const int kChecksum2Offset = kChecksum1Offset + kInt32Size;
   static const int kHeaderSize = kChecksum2Offset + kInt32Size;
 };
 } }  // namespace v8::internal
 
 #endif  // V8_SERIALIZE_H_